The action evaluated in this environmental impact statement (EIS) is the closure of George Air Force Base (AFB) in California. The closure is the result of the recommendations of the Defense Secretary's Commission on Base Realignments and Closures, from legislative requirements in the Base Closure and Realignment Act (Public Law 100-526; the 'Act'), and from U.S. Air Force plans to enhance mission readiness and national security. Primarily, the closure of George AFB will involve the relocation of personnel, 92-F-4E/G aircraft, equipment, and supplies to Mountain Home AFB in Idaho and the inactivation of 24 OV-10 aircraft. In addition to the above activities directly related to the closing of Georgia AFB, the following unit moves will also occur. Twenty-three combat-coded F-4E/G aircraft in the 37th Tactical Fighter Wing at George AFB are to be deactivated beginning in October 1989, along with a reduction of 745 personnel authorizations. These movements were planned prior to the Commission's recommendations and will occur prior to the actual closing of the Base which is scheduled for the winter of 1992. Also, there is a planned relocation of Air Warrior from George AFB to Nellis AFB in Nevada. This EIS baseline assumes that all units are currently operational as described in Chapter 3. Chapter 4 of this document assesses the impacts of the closure of the Base (withdrawal of all units).